dm: introduce per_bio_data

[karo-tx-linux.git] / drivers / md / dm-table.c

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 6be58b696377d9c6b013de935fed0578c823a375..daf25d0890b3d6cdf9852b739593648f00b86425 100644 (file)
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -967,13 +967,22 @@ bool dm_table_request_based(struct dm_table *t)
 int dm_table_alloc_md_mempools(struct dm_table *t)
 {
        unsigned type = dm_table_get_type(t);
+       unsigned per_bio_data_size = 0;
+       struct dm_target *tgt;
+       unsigned i;
 
        if (unlikely(type == DM_TYPE_NONE)) {
                DMWARN("no table type is set, can't allocate mempools");
                return -EINVAL;
        }
 
-       t->mempools = dm_alloc_md_mempools(type, t->integrity_supported);
+       if (type == DM_TYPE_BIO_BASED)
+               for (i = 0; i < t->num_targets; i++) {
+                       tgt = t->targets + i;
+                       per_bio_data_size = max(per_bio_data_size, tgt->per_bio_data_size);
+               }
+
+       t->mempools = dm_alloc_md_mempools(type, t->integrity_supported, per_bio_data_size);
        if (!t->mempools)
                return -ENOMEM;